Sonic, Tails, and Knuckles are all treasure hunting when they come across something interesting.

CAST:
Sonic, Mario, Luigi, Yoshi, Bowser, Metal Sonic, Shadow, Narrator, Knuckles, Espio (understudy) - skull902.
Dr. Eggman/Robotnik - RabidSonicFan.
Rouge the Bat, Miles "Tails" Prower, Princess Peach (understudy), Amy Rose (understudy), - SonicSong182's Knux.
Amy Rose, Princess Peach - StarWoodpatch.
Dr. Eggman/Robotnik (understudy) - BoyleVoices and PlatinumSpeed.
Vector the Crocodile - cjszero01.
Espio the Chameleon - BeatBlox.
Charmy Bee - SonicSong182's Amy.

OPENING/CREDITS THEME:
"Overworld Rumble: Sonic & Mario" by DJ Pickle (pickleman77)
http://www.newgrounds.com/audio/listen/93655

SPRITES:
Sonic, Tails, Knuckles, and Amy Rose made by Daniel Sidney.
Rouge the Bat made by Micha/Frario.
Dr. Eggman made by Silverbolt.
Shadow the Hedgehog made by Deekman.
Mario, Luigi, Peach, Yoshi, and Bowser and made by AJ Nitro.
Backgrounds by Shadowbot.